CXC 700 is an active noise reduction headset launched by Sennheiser. Its sensitivity is up to 108dB. It is powered by AAA batteries, and its continuous use time is about 16 hours. This earplug can collect the surrounding noise environment through the built-in highly sensitive microphone, and then the built-in noise reduction chip analyzes the noise, calculates an opposite wave to cancel, so as to achieve the purpose of intelligent noise reduction. In addition, this earplug has three different noise reduction modes.

On Amazon, the CXC 700, which was originally priced at $229.95, now has a 57% discount, with a price of $129.94. The purchase price of overseas shopping is about 840 yuan. The price of the same headset in Amazon China is 1979 yuan.

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